2007-02-11 05:53:03 · 14 answers · asked by ravin 1 in Science & Mathematics ➔ Engineering
Glue has to have an activator to cure, and generally the package is designed to prevent exposure to that. The glues you may be referring to would be aerobic, which means they cure when exposed to air. The bottle keeps the air out so no curing. Notice how there is usually some cured glue around the neck or lid.
Other curing mechanisms are exposure to light, or a second chemical (catalyst) - think two part epoxy.
The packaging is also usually made from material difficult to stick to, so if it does cure it can come off easily.
2007-02-11 10:28:26 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Glue does not stick until it is cured(Engineering term for dry and effective).
It has self life and during that time it is still usable but most glue will stick and build up on the side of the bottle.
So look at some old bottles you will notice it.
PS:
Most answers are valid within the limits of self life. There are glues that will and will not cure in the presence of air, that depends on again the type of glue.
2007-02-12 09:27:16 · answer #2 · answered by minootoo 7 · 0⤊ 0⤋
The bottle is made of a material the glue doesn't stick to. Sounds circular, I know, but that's why.
2007-02-11 13:59:53 · answer #3 · answered by Helmut 7 · 0⤊ 0⤋
The glue doesn't stick to its bottle because when u close the top there will be no air inside.Keep it opened it will harden.
2007-02-11 14:04:22 · answer #4 · answered by Anees A 1 · 0⤊ 0⤋
as long the bottle is air tight the glue will not stick to its bottle.
once air enters,glue will stick to its bottle
2007-02-12 07:16:36 · answer #5 · answered by Anonymous · 0⤊ 0⤋
it is air which is needed for the glue to dry up and stick the objects to which it is applied. since the bottle is capped airtight, the glue was not allowed to dry up and stick the bottle.
2007-02-11 23:41:17 · answer #6 · answered by natarajan@ezee 2 · 0⤊ 0⤋
it is because glue is a gel type solution which is a little bit greasy so it is rare that a glue get sticked on the plastic bottle.
2007-02-12 04:13:13 · answer #7 · answered by hitesh v 1 · 0⤊ 0⤋
Because in the case of glue, cohesive property is greater than adhesive property. Somewhat like mercury and totally opposite to water.
2007-02-11 14:12:40 · answer #8 · answered by Pseudo 2 · 1⤊ 0⤋
firstly if we leave open the cap we will notice that it dries and other is that the material of the bottle is made up of the supporting material of the glue
2007-02-12 02:16:26 · answer #9 · answered by Anonymous · 0⤊ 0⤋
When you cap it, the moisture stays in and the bottle stays humid.
Uncap your glue and you'll see that it'll dry up.
2007-02-11 14:01:51 · answer #10 · answered by winninchampp 1 · 0⤊ 0⤋